Examples with DoubleStream java.util.stream.DoubleStream used on opensource projects

Example 6 with DoubleStream

use of java.util.stream.DoubleStream in project junit5 by junit-team.

the class CollectionUtilsTests method toStreamWithDoubleStream.

@SuppressWarnings("unchecked")
@Test
void toStreamWithDoubleStream() {
    DoubleStream input = DoubleStream.of(42.23);
    Stream<Double> result = (Stream<Double>) CollectionUtils.toStream(input);
    assertThat(result).containsExactly(42.23);
}

Example 7 with DoubleStream

use of java.util.stream.DoubleStream in project keycloak by keycloak.

the class ClosingIntStream method asDoubleStream.

@Override
public DoubleStream asDoubleStream() {
    DoubleStream result = delegate.asDoubleStream();
    close();
    return result;
}

Example 8 with DoubleStream

use of java.util.stream.DoubleStream in project KursJava by SamouczekProgramisty.

the class StreamCreation method main.

public static void main(String[] args) throws FileNotFoundException {
    Stream<Integer> stream1 = new LinkedList<Integer>().stream();
    Stream<Integer> stream2 = Arrays.stream(new Integer[] {});
    Stream<String> stream3 = Pattern.compile(".").splitAsStream("some longer sentence");
    DoubleStream doubles = DoubleStream.of(1, 2, 3);
    IntStream ints = IntStream.range(0, 123);
    LongStream longs = LongStream.generate(() -> 1L);
    DoubleStream randomDoubles = new Random().doubles();
    IntStream randomInts = new Random().ints();
    LongStream randomLongs = new Random().longs();
    Stream.empty();
    try (Stream<String> lines = new BufferedReader(new FileReader("file.txt")).lines()) {
    // 
    }
}

Example 9 with DoubleStream

use of java.util.stream.DoubleStream in project tutorials by eugenp.

the class GuavaStreamsUnitTest method createStreamsWithOptionalDouble.

@Test
public void createStreamsWithOptionalDouble() {
    DoubleStream streamFromOptionalDouble = Streams.stream(OptionalDouble.of(1.0));
    // Assert.assertNotNull(streamFromOptionalDouble);
    assertEquals(streamFromOptionalDouble.count(), 1);
}

Example 10 with DoubleStream

use of java.util.stream.DoubleStream in project tutorials by eugenp.

the class StreamsUtility method main.

public static void main(String[] args) {
    List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20);
    // Using Collection
    Stream<Integer> streamFromCollection = Streams.stream(numbers);
    // Using Iterator
    Stream<Integer> streamFromIterator = Streams.stream(numbers.iterator());
    // Using Iterable
    Stream<Integer> streamFromIterable = Streams.stream((Iterable<Integer>) numbers);
    // Using Optional
    Stream<Integer> streamFromOptional = Streams.stream(Optional.of(1));
    // Using OptionalLong to LongStream
    LongStream streamFromOptionalLong = Streams.stream(OptionalLong.of(1));
    // Using OptionalInt to IntStream
    IntStream streamFromOptionalInt = Streams.stream(OptionalInt.of(1));
    // Using OptionalDouble to DoubleStream
    DoubleStream streamFromOptionalDouble = Streams.stream(OptionalDouble.of(1.0));
    Stream<Integer> concatenatedStreams = Streams.concat(streamFromCollection, streamFromIterable, streamFromIterator);
    List<Integer> integers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
    // This will return 10
    Optional<Integer> lastItem = Streams.findLast(integers.stream());
    Streams.zip(Stream.of("candy", "chocolate", "bar"), Stream.of("$1", "$2", "$3"), (arg1, arg2) -> arg1 + ":" + arg2);
}